if one is a day

English

Alternative forms

if a day

Etymology

(This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium.)

Phrase

if one is a day

If not older; at least.
He must be fifty if he's a day.

Antonym: at most

See also

not look a day over

Further reading

“if one is a day”, in Lexico, Dictionary.com; Oxford University Press, 2019–present.
“if one is a day” in Longman Dictionary of Contemporary English, Longman.
“if one is a day”, in Merriam–Webster Online Dictionary.
“if someone s a day” (US) / “if someone s a day” (UK) in Macmillan English Dictionary.

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